From patchwork Thu Aug 29 05:39:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?U2FtIFNoaWggKOWPsueiqeS4iSk=?= X-Patchwork-Id: 11120349 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CCEC51395 for ; Thu, 29 Aug 2019 05:41:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id ABE312189D for ; Thu, 29 Aug 2019 05:41:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Kv9OhNSI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ABE312189D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=44C0tmvo3TxO7Qb3rAM7wHACgc4swEJxtTFurqkIIFw=; b=Kv9OhNSIAvBG9m wAsAJxTsj2hKPjKH5jMdeSKWBmf+5mCG5yvXWeZs+VWthwqBpckA//bQdkLSLiigmEeZm09EKPbH3 8HG7Tifn1BCE1AuJF0AAPIZ1EOxft8bi9011qc3VXz/bJcqPMktBPbrhHK5MdBtSeIxpY4/ObBQ8n MK8bUmS8RV9eB4fh7XthkjcJjbE7U6y8ucEVUM2J20lDwAgY/7lLr2F9yYrGckZPtlO0eDMSLILAk E0OkW78mhhusOTuDe0Waa82vVj3WmIB/NbPxJ0SPH46g57vCLMWqwlsAuBifB+F40a4i0IUPsHlJQ 3oWPAjBBYD2BNpUksiIg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i3DBr-0006eb-9j; Thu, 29 Aug 2019 05:41:47 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i3DBo-0006ds-CH for linux-mediatek@lists.infradead.org; Thu, 29 Aug 2019 05:41:45 +0000 X-UUID: efee896a84154e118b28d49785a38443-20190828 X-UUID: efee896a84154e118b28d49785a38443-20190828 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1636400480; Wed, 28 Aug 2019 21:41:47 -0800 Received: from mtkmbs08n2.mediatek.inc (172.21.101.56) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 28 Aug 2019 22:41:46 -0700 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs08n2.mediatek.inc (172.21.101.56) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 29 Aug 2019 13:41:44 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 29 Aug 2019 13:41:44 +0800 From: Sam Shih To: Rob Herring , Mark Rutland , Matthias Brugger , Thierry Reding Subject: [PATCH v6 03/11] pwm: mediatek: remove a property "has-clks" Date: Thu, 29 Aug 2019 13:39:12 +0800 Message-ID: <1567057160-552-4-git-send-email-sam.shih@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1567057160-552-1-git-send-email-sam.shih@mediatek.com> References: <1567057160-552-1-git-send-email-sam.shih@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 8D2F3E0696329E530728660C02C123A9247CFD883437B048529CD58A5044D3E72000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190828_224144_420810_9E94D5D0 X-CRM114-Status: GOOD ( 13.06 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-pwm@vger.kernel.org, Ryder Lee , devicetree@vger.kernel.org, Sam Shih , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, John Crispin Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org We can use fixed-clock to repair mt7628 pwm during configure from userspace. The SoC is legacy MIPS and has no complex clock tree. Due to we can get clock frequency for period calculation from DT fixed-clock, so we can remove has-clock property, and directly use devm_clk_get and clk_get_rate. Signed-off-by: Ryder Lee Signed-off-by: Sam Shih --- Changes since v6: Based on fixed-clock in DT, we can remove has-clks property Changes since v5: 1. Follow reviewer's comments Make the changes of fix mt7628 pwm as a single patch Changes since v4: - Follow reviewers's comments 1. use pc->soc->has_clks to check clocks exist or not. 2. Add error message when probe() unable to get clks - Fixes bug when SoC is old mips which has no complex clock tree. if clocks not exist, use the new property from DT to apply period caculation; otherwise, use clk_get_rate to get clock frequency and apply period caculation. --- drivers/pwm/pwm-mediatek.c | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c index ebd62629e3fe..07e843aeddb1 100644 --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -57,7 +57,6 @@ static const char * const mtk_pwm_clk_name[MTK_CLK_MAX] = { struct mtk_pwm_platform_data { unsigned int fallback_npwms; bool pwm45_fixup; - bool has_clks; }; /** @@ -87,9 +86,6 @@ static int mtk_pwm_clk_enable(struct pwm_chip *chip, struct pwm_device *pwm) struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); int ret; - if (!pc->soc->has_clks) - return 0; - ret = clk_prepare_enable(pc->clks[MTK_CLK_TOP]); if (ret < 0) return ret; @@ -116,9 +112,6 @@ static void mtk_pwm_clk_disable(struct pwm_chip *chip, struct pwm_device *pwm) { struct mtk_pwm_chip *pc = to_mtk_pwm_chip(chip); - if (!pc->soc->has_clks) - return; - clk_disable_unprepare(pc->clks[MTK_CLK_PWM1 + pwm->hwpwm]); clk_disable_unprepare(pc->clks[MTK_CLK_MAIN]); clk_disable_unprepare(pc->clks[MTK_CLK_TOP]); @@ -262,11 +255,13 @@ static int mtk_pwm_probe(struct platform_device *pdev) npwms = MTK_CLK_MAX - 2; } - for (i = 0; i < npwms + 2 && pc->soc->has_clks; i++) { - pc->clks[i] = devm_clk_get(&pdev->dev, mtk_pwm_clk_name[i]); + for (i = 0; i < npwms + 2 ; i++) { + pc->clks[i] = devm_clk_get(&pdev->dev, + mtk_pwm_clk_name[i]); if (IS_ERR(pc->clks[i])) { dev_err(&pdev->dev, "clock: %s fail: %ld\n", - mtk_pwm_clk_name[i], PTR_ERR(pc->clks[i])); + mtk_pwm_clk_name[i], + PTR_ERR(pc->clks[i])); return PTR_ERR(pc->clks[i]); } } @@ -297,25 +292,21 @@ static int mtk_pwm_remove(struct platform_device *pdev) static const struct mtk_pwm_platform_data mt2712_pwm_data = { .fallback_npwms = 8, .pwm45_fixup = false, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7622_pwm_data = { .fallback_npwms = 6, .pwm45_fixup = false, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7623_pwm_data = { .fallback_npwms = 5, .pwm45_fixup = true, - .has_clks = true, }; static const struct mtk_pwm_platform_data mt7628_pwm_data = { .fallback_npwms = 4, .pwm45_fixup = true, - .has_clks = false, }; static const struct of_device_id mtk_pwm_of_match[] = {